Valve.



W. O. MARSH. VALVE. APPLICATION FILED T11R20, 1909.

941,934. Patented Nov. 30, 1909.

s'nuentou Quezon per-most position contacts with an annular UNITED, STATES PATENT OFFICE.

WILLIAM c. MARSH, or nummix, new roux.

VALVE.

Specification of Letters gatent.

Application filed February 20, 1909. Serial No. 479,109.

To all whom it may concern:

Be it known that I, \VrLmAM C. Mensa, a citizen of the United States, residing at Dunkirk, county of Chautauqua, State of New York, have invented new and useful cially adapted for use with radiators, and

has for its object to provide a quick opening and closing valve oi novel construction embodying not only a main closure but also a closure for preventing leakage through the valve stem or stuliing box when the main valve is open.

In the accompanying drawing: The figure is a central vertical sectional view of my improved valve.

[n the said ,drawin the reference numeral 1, denotes the'body ot a radiator valve, havlug the interiorly threaded inlet aperture 2 for the reception of the supply pipe, and the oxleriorl y threaded discharge 3, to which may be connected, by a union nut 4, a short threaded pipe section or nipple 5, for connection with a radiator. The upper side of the body 1 is apertured and interiorly screwthreaded at 6 to receive a bonnet piece 7, which in turn carries a packing nut 8 at its upper end, between whic and the upper end of said bonnet piece a packing 9 is interposed.

Passin g centrally through the packing nut 8 and packing 9 and extended into the bonnet piece 7 is a valve stem 10 provided intermediate its length with a right-hand screw thread 11, and at its lower end with a simi- ,larly pitched left-hand screw thread 12, a

the bonnet piece 7 so that the stem 10 will.

move up and down in said bonnet piece when rotated through a suitable handle 13, while the screw thread 12 thereof is in threaded engagement with a disk holder, 14 located-within a chamber 15 formed in the bonnet piece 7, said disk holder 14 having on its upper surface an annular recess adapted to receive a suitable hard acking disk 16, which, when said disk hol er is in its upseat 17 formed on the bonnet piece 7 around the stem 10. The reduced lower end 18 of the disk holder 14 has screwed thereon an enlarged nut 19 rounded on its underside,

disk holder 20. The

v through the bonnet as shown, over which fits a main valve disk holder 20, the same being retained in positlon by an apertured nut 21 loosely surrounding the reduced lower end 18 of disk holder 14 and screwed into said main valve lower surface of said main valve disk holder 20 is recessed annularly to receive a suitable hard packing disk 22, which is retained in position by a washer 23, said packing disk being adapted to engage a valve seat 24 in the body 1 when said valve disk holder is in its lowermost posi tion. The interior of the bonnet piece 7 is formed with suitable downwardly projectmg guides 25 within which move vertically suitable lugs 26 projecting from the sides of I the upper disk holder 14', whereby rotary motion of the latter is prevented.

In operation, a rotation to the right of stem 10 will, through thread 11, cause a bodily downward movement of said stem and the two disk holders l4 and 20, and, through thread 12, cause an additional separate downward movement of said disk holders, so that lower valve disk holder 20 will move from the completely open to the closmg position under one-half the bodily movement of stem 10. In opening, the movement of stem 10 is reversed, with a similar augmented speed of the disk holders seating the packing disk 16 against its seat 17 and eflectually preventing the escape of fluid piece 7.

It will be observed that by means of the connection between the main -valve disk holder 20 and the lower end 18 of u per disk holder 14 a slight universal rockl motion is permitted to said main valve dis r holder, whereby an accurate seating of the packin disk 22 thereof on valve seat 24 is insure By forming the two disk holders 14 and 20 separate elther of the same may be replaced by a new one without the necessity of replacin the other.

Having thus escribed my invention, what I claim as new and desire to secure by Letters Patent is:

1. A valve, embodying a casing, a stem rotatable in said casing, oppositely disposed seats in said casing, and two disk holders formed separately from each other and from said stem and connected to each other, said disk holders carrying disks for engaging said seats and adapted to be moved longitudinally by the rotation of said stem.

2. A valve, embodying a casing, a stem bodily movable in said casing through a screw threaded engagement therewith, oppositely disposed seats in said casing, and two disk holders formed separately from each other and from said stem and connected to each other, said disk holders carrying disks for enga 'ing said seats and being together carried y said stem.

3. A valve, embodying a casing, a stem bodily movable in said casing through a screw threaded engagement therewith, oppositely disposed seats in said casing, and two disk holders 'forlned separately from each other and from said stem and connected to each other, said disk holders carrying disks for engaging said valve seats and being together carried by said stem and lllOV-x able therewith without rotation.

4. A valve, embodying a casing, a stem bodily movable in said casing through a screw threaded engagement therewith, oppositely disposed seats in said casing, and two disk holders formed separately from each other and from said stem and havin a universal rocking connection with eac other, said disk holders carryin' disks for said valve seats and being toget er carried by said stem. I

5. A valve, embodying a casing), a stem bodily movable in said casing t r screw threaded engagement therewith, oppositely disposed seats in said casing, two disk holders formed s parately from each other and from said/stem and connected with each other, said disk holders carrying disks for said seats and being together carried by said stem, and means for moving said disk holders, when moved by said stem, at a speed greater than that of said stem.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

WILLIAM C. MARSH. \Vitnesses FRED J. REED, J. L. Hnnnnnn'r. 

